[ovirt-users] Mixing CPU types

[Matthew Trent]

Though our new oVirt setup is better in most ways, cross-CPU-type migration is one of the features I miss from Proxmox. KVM supports mixed-CPU migration for a while now, even between AMD and Intel.

http://www.linux-kvm.org/page/Migration

I'm using a bunch of re-purposed servers with a mix of AMD and Intel. I separate them into clusters, as noted, but it sure would be nice to be able to live migrate between them. :)

--
Matthew Trent
Network Engineer
Lewis County IT Services

> Hi Rene,
>
> Thank you very much for coming back to me.
>
> That's perfect then and answers my questions exactly.
>
> Much appreciated.
> 
> Regards.
>
>Neil Wilson.
>
>
>On Wed, Jan 27, 2016 at 1:57 PM, René Koch <rkoch at rk-it.at> wrote:
>>
>> Hi Neil,
>>
>> You can mix cpu types (but not AMD and Intel) if you leave the cluster
>> level at the lowest cpu level.
>> I personally don't mix cpu levels if possible, but instead create own
>> clusters for each cpu type in order to be able to use the newest cpu
>> features...
>>
>>
>> Regards,
>> René
>>
>>
>> On 01/27/2016 12:53 PM, Neil wrote:
>>
>> Hi guys,
>>
>> I currently have an oVirt 3.5 cluster with Sandy Bridge Xeon CPU's, and I
>> need to add a new host for more RAM and vCPU's, however the new Xeon e5
>> cpu's are Haswell based.
>>
>> Can I mix CPU types (Haswell and Sandy Bridge) in my cluster and will I be
>> able to migrate between my hosts?
>>
>> I'm guessing that for this to work I'll need to leave my "CPU type" set to
>> Sandy Bridge, will the Haswell based CPU be compatible with my cluster, but
>> just run without any Haswell type features?
>>
>> Apologies if this is a dumb question or if it's been answered before.
>>
>> Thank you.
>>
>> Regards.
>>
>> Neil Wilson
>>